Metallics JMHTB1050 Bolts M10 x 50 C8.8 Hx Tap Blt St-zn (Jar 50)

It's an M10 by 50 mm hex head tap bolt in property class 8.8, steel with zinc plating. Class 8.8 is the common metric medium-carbon structural grade, roughly comparable to a SAE Grade 5 inch bolt, so it handles general equipment mounting, strut and machine anchoring work rather than light sheet metal fastening.

A tap bolt is threaded the full length under the head, which is the difference between it and a standard hex cap screw with a partial shank. On the M10 x 50 Metallics bolt that means all 50 mm of the body carries thread, so it can be run into a tapped hole at any depth or used with a nut through varying material thicknesses without worrying about the grip length falling on an unthreaded section.

M10 bolts of this type are standard metric coarse, 1.5 mm pitch, so they thread into an M10 x 1.5 tapped hole or take an M10 x 1.5 nut. If the equipment you are fastening into is tapped M10 x 1.25 fine thread, this bolt will not start.

The zinc plating on these M10 bolts is a general corrosion coating suited to dry indoor and protected electrical work, panel and enclosure mounting, strut and equipment anchoring. For sustained wet exposure, coastal air, or direct ground contact, hot dip galvanized or stainless is the better call. Plated class 8.8 fasteners are also the wrong choice where a job spec calls for stainless on dissimilar-metal grounds.

No. The JMHTB1050 jar is bolts only, 50 pieces of M10 x 50 class 8.8. If you are bolting through rather than into a tapped hole, order M10 x 1.5 nuts and M10 washers separately, and match the plating so you are not mixing zinc plated hardware with bare steel.

Fifty bolts, supplied in a jar rather than a loose box. The jar packaging suits a van stock or shop bin where you pull a handful at a time. Order by MPN JMHTB1050.